Disposable bag with a collar



FIG. 1 is a top view of the disposable bag with a collar;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof; and,

FIG. 4 is a right side view thereof; the left side view being a mirror image thereof.

The broken lines shown in Figures illustrate portions of the disposable bag with a collar that form no part of the claimed design. 

CLAIM The ornamental design for a disposable bag with a collar, as shown and described. 